The design of the front and back of the Gaddang man’s shirt as well as the sleeves is a combination of frieze patterns.
The pattern with diamond-like motifs has vertical as well as horizontal reflection symmetries and 180o rotations with centers where the axes of reflections meet. The symmetry group is mm.
The thinner strips such as those colored yellow or white-blue-yellow have reflectional symmetries with axes spaced half the translation length. The symmetry group is m1.